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C40-60 PARETH-10.

Valuable CAS 246538-86-3 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A high-performance non-ionic emulsifier and surfactant distinguished by an exceptionally long hydrocarbon chain. It is engineered to stabilize complex oil-in-water emulsions, particularly those containing heavy lipids, waxes, or mineral pigments.

Emulsifying Surfactant Cleansing Stabilizing Thickening

Science

By lowering interfacial tension, this ingredient creates a robust bridge between aqueous and lipid phases. Its unique C40-60 chain length allows it to effectively disperse and suspend high-melt-point ingredients like silicones and waxes, preventing phase separation while providing secondary thickening and emollient benefits.


Research

High confidence
Effective range 0.1–5%
Optimal

2.5%

Key findings

  1. 01 A comprehensive safety assessment by the Cosmetic Ingredient Review (CIR) published in the International Journal of Toxicology (2012) established that Alkyl PEG Ethers are safe for cosmetic use up to 5.0%, highlighting their efficacy in stabilizing high-viscosity components.

Transparency

Not commonly dusted
Min. effective
0.1%
Red flag below
0.05%

As a functional stabilizer, this ingredient is rarely used for marketing purposes. Levels below 0.1% are generally insufficient to provide the necessary emulsifying properties required for formula integrity.


The Formula

Solubility
Both
Optimal pH 4 – 9
0 7 14

Stability

Highly resilient in the presence of electrolytes and salts. It maintains structural integrity across a broad pH spectrum and is compatible with both acidic and alkaline environments.

Synergies

  • Mineral pigments
  • High-melt-point waxes
  • Dimethicone
  • UV filters

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Quality control is essential; raw materials must be strictly screened to ensure they are free from 1,4-dioxane and ethylene oxide residues.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

An indispensable structural agent for precision skincare, ensuring the stability and uniform delivery of heavy-duty emollient and protective ingredients.


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References